Continually variable change speed gear



.Jan- 3l, 1933- o. G. wELLToN 1,895,841'

CONTINUALLY VARIABLE CHANGE SPEED GEAR Inn w77 ff '1 Jan.31,1933. QGWELLTON 1,895,841

CONTINUALLY VARIABLE CHANGE SPEED GEAR Filed Aug. 29, 1951 3 Sheets-Sheet 2 Jan. 31, 1933. o. G. wELLToN CONTINUALLY VARIABLE CHANGE SPEED GEAR 5 Sheets-Sheet 3;

Filed Aug. 29, 1931 o ooo Patented `lan. 31, 1933 UNITE-D STATES o'T'r-o GOTTEMED WELLTo-N; or sAL'rsafoBAnEm-LSWEDEN cozrrINUALmz` van/MELE CHANGE SPEED JGEAE application med August 29, .1931, Seriai lio. 560,181, and in sweden. septnaare,11930,Y y l My present invention refer'stfo continually `variable change speed 'Gears adapted ffor Atransmissio'n orf rtational movement from a driving shaftv to a 'driveiione V'The invention i ,5 has for its main object topi-Ovide a 'change speed gearof this type, which is cheap in manufacture and reliable in action, evenfat great speedsl Further the invention vhas vfor its object to pr'ovidera continually .variable .10 ,change speed gear the gear ratiofof which may be varied according towill, soth'at Vit lWill be possible, for instance when the "driving shaft has a constant and comparatively Great Speed, `to give the driven shaft any y ,c esired speed Within limits ranging froni'zero and up to a certa-in maximum value, and therein, When starting the driven` shaft, to transferte the same agreat starting torque.

The change speed gear according to the invention is especially adapted to be applied 'to locomotives or motor driven cars, for instance railway cars driven by Diesel-engines, er other internal combustion engines, 'which otherwise in'ust have been brought vupv't'o a ,25 certain running speed before being able to generate the amount of potver needed for starting the car when at rest,"biut the invenf tion is not limited to such'use' only, and it may be used at advantage in many other instances when it is desired-` to vary the gear ratio betnreein the' driving shaft and the driven one. v

y The invention is based on the employment of a. 'new and special kind` of lgear which maybe termed a'defermjation gear as af-dis-p tinction from common friction gears havingA at least one' `ear member lmade fronicomparatvely soft and resilient material.` In the deformation Agea-r according to the inven- 40 tion both of the gear meinb'ers'alre' very hard,

and they are pressedf against each other under a very highpressure. Thereby 'this' pressure Willicause agdeformation of both members, so that one of them at the line vof contact will plowl a furrow in the other, but the elasticity of the members must, be so great that this deformation Will not be. permanent. Thereby the gear members Will regain their origina-l shape when the contact pressure has" d ceased, and theapparatus Will act substantially as a. toothed gear having `one tooth inviiiesh at the same time 0nly,'an'd wherein the pitch f,

*f the gear is, infinite.

Agco'mn," t0, the invention the, change speed gear consists of at least one deforl'na- 5,5 .tion gear of this kind, which' is 'connected with anin'termediate shaft, so that thelatter, When the driving shaft is running Aat a constant speed, may be brought to rotate at diii'erent speeds, this deformation gearbeing 60 combined jtvith a diii'erential geanthe sun (Wheels of which are -connected' with the driv- Y ingshaftand Vthe intermediate one` (or When A construction-based on the elnploymen 'f tWo 'deformation gears and Vtvvo intermedate shafts connected therewith has the advantage over theconst'ruction based'on'the t 'employment of one single -deformation 'gear Vthat a certain desired variationof Athe "gear, 'ratio' may be obtained by a small-er 'change of position ofthe gear Wheels in relation to' each 80 other, and a saving 'of space may be obtained thereby, Vif required y l Y By connecting the driven shaft With the planetwhe'el support ofthe 'differential gear, so that the speed of the "former becomesV proplortional' to the diife'rence in speed between the t'vvo sun Wheels,i`t will Obviously r'be 'ps- .sible to vstart' tliedriven shaft even when the sun Wheels rotate at'greatspeeds". When applying' the inventionto internal combustionv 90 engines, this means that the `driven shaft Will lget a great starting torque Which is sufficient for starting heavy motor cars or trains. When using tWo deformation'gear's each connected with acorresponding in'terinediatev 95 shaft, both of these gears may suitably be constructed in the shape ofplane Wheel "gears having. a. disc member common toy both` fof them, suchdisc member being connected vvith and driven bythe driving shaft, and the gear wheels coacting with said disc may be mounti Ved at opposite sides thereof. The advantage hereof is that the pressures of the gear wheels l may counteract. each other, so that the bearing Y members of the disc will not be subjected to heavy axial stresses, or thrusts, even if the contact pressurerbetvveen the Wheels andthe vdisc is very high.

The accompanying drawings showan embodiment of the invention applied to a Change Vspeed gear provided with rtvvo Ydeformation gears constructed inthe form of plane 'wheel ordisc'gears having a common disc as hinted at abovef In the 'dra-Wings Fig. l is aflongitudinal section of the @change speed gear, and 1 `Fig.`2 is a cross section thereof atthefline II-I1 in Fig. i.

Fig. 3 is a cross section at theline III-II'I in Fig. 1. Y

, VFig. 4 is across section at the lineiIV-r-IV in Fig. 1, and

" Fig.`5 is a cross section at the line Vf-V in iIn the embodiment' shown inthe drawings fixed atoothed gear 6 positioned in mesh with `smaller Ytoothed wheels, 0r' pinio'ns, 7 each-mounted on a corresponding shaft 8 rigidly mounted in the casing 5; in suitable Y bear-ings. 1 In the embodimentshown, .the

wheels 7 .and the corresponding shafts 8 are ,three in number, kbut another number thereof may also be employed.V

Attheir inner ends eachof the said shafts 8 is provided with a pinionQ meshingwith a common toothed wheelv 10 rigidly secured to a 'hollow shaft 11 which is also rigidly secured toa disc 1-2 belonging tothe deformation gears, this gear dischereby-.being driven from the driving rshaftj 1.`

. t each Side of the gear dise r2 is prvided a set of coactng deformation gear Wheels 13 and 14 respectively, such gear wheels being `preferably spherical at their circumferences a and adapted to befpressed against the com- Y rmon gear disc l12 fromopposite sidesthereof. :Both the disc 12and the Wheels 13, 14 vare of m a very hard but somewhatk elastic material,

such as tempered steel. In the embodiment shown, three wheels 13 and 14. are, mounted dat each side ofthe disc, and preferably they 'Y take a Vsymmetrically interspaced position f aroundthe axis of rotation of the disc 12. Inlthe set of Vwheels 13 positioned tothe left. ofthe disc 12 (Fig. 1), each wheel is displace` ably mounted on a radially extending shaft Y 1 15 the inner end offwhichis provided'with a bevel gear 16, and in the set of wheels 14 positioned at the right of the Vdisc 12, each Wheel is displaceably mounted on a radially extending shaft 17, theinner end of which is provided withabevel gear 18. The three gears 16 are inY mesh with a commonbevel gear 19 affixed to one end of an intermediate shaft 2O extending through the'hollow shaft i 11V ofthe deformation gearfdiscf12," andthe three gears 18 are in mesh with a-/connnon bevel' gear 21 laflixed Y to one 'vend ofV another intermediate shaft 22l which is'rtubular and surrounds the first mentioned intermediate Y shaft 20. The two intermediate shafts 2O and 22 areeacli connected with one ofthe two sun wheels '23 and 24, respectively, of a differential gearmounted at the right vhand end (F ig.'

V 1) of the casing 5 and provided with three planet wheels 25 meshing at opposite sides Y with vthe two sun wheels 23 and`24. The planetNvheels 25 a're aixed Vto short radial shafts 26`supported inV suitable bearings by the planet wheel'support 27 Whichjis rotata i bly mounted around the Sintermediatefshaft' 20( The said shaft 20 is rigidly 'connected `with a drum28 connected byineansof a laminated l'friction clutchj29 Withla second drum 30 rigidly secured to the driven shaft 2.

w no s It willbe obvious'that in casethedeforma- I tion gear disc is v'set into rotation, the de--zV formation gear Awheels 13 vand 14 positioned Vat vopposite. sides' thereof Willbe brought to rotate'in oppositedirections, so that'the sun Wheels 23 and24 wllalsobe rotated in oppositedirections.` In caseA the geariwheels 1-3 s and 14 are adjusted into such aposition Vin relation tothe centre of the gear-'disc 12that s the sun wheels 23 and 24 are brought to rotate with thesame speed inv opposite directions,

no rotational novement will be transmitted.

to thel driven shaft 2, as the planet wheels 25 i Will thereby rotate aroundtheir ownr shafts 'only the planet wheel support 27 being at a f rest. .A

' In order to transmita rotational'move- I i ment tothe driven shaft 2, `it is necessary .to

vary the speed of atleast one ofv thefsun g wheels, sothat such speed willbe. smaller or i greater thanfthe speed of theo'ther sun wheel,V and an adjustment'of this Akindmay be perf formed bydisplacement Yof the deformation gear wheels (1391114) connected With the corresponding sun wheel in vrelationl to the v centre ofthe deformation vgear disc 12.

In the embodiment shown in the drawings,

the construction isofsuch a lrindfthatthe gear ratio ,between the wheels 13V and the sun Wheel23 Vconnected therewith,and that between the Wheels 14 andfthe' sun` wheelV 24 V connected therewith, is Iselected l in a manner so thatthe sun wheels 23 and 24 are brought to rotate in opposite directions with the same speed, whenl the wheels 13 a'nd114 take the positionsy shownin Fig. l, wherein the wheels y13 are positioned Vat a greaterdista'nce *froml Y the centre of the gear disc 12 than the wheels iso ssi

14. Therefore the ldrivenshaftl`2 will-beat a rest when the wheels 13 and 14'are in the positions shown.

The starting of the shaft 2isintended tol By mounting the gear wheels 13 and 14`in the manner described above, so thatthey are initially at different distances from the ,centre of the gear disc 12, and bythe simultaneous displacement of the same inwardly andvo'ut,- wardly, respectively, `the distinct advantage is gained that the greatest'possiblevariation of the speed of the driven shaft 2 willbe obtainable withrthe smallest possible `displacement of the gear wheels V13, 14 inradial direction. j j f A` In order to make it possible to transmit the desired amount of power from the driving shaft 1 to the Vdriven shaft 2, it is necessary that the deformation gear wheels 13 and'14 are pressed against the gear disc 12 with a certain amount of pressure, so that the re-V quiredamount of torque is transmitted to the shafts 15 and 17 In the embodiment shown in the drawings, this pressure is obtained by the mounting of the shafts15 ofthe gear wheels 13 at one side of the gear disc 12 in a piston 31 slidably mounted in the casing 5, such piston 31 being acted upon by a suitable pressure iiuid tending to press the same against the gear disc12 whichinitself is mounted for a slight displacement inaxiall direction. j Y

By means of a pipe 33 the chamber 32 between the piston 31 andthe left hand end wall of the casing 5 (Fig. 1) stands inconnection with a` pressurefluid container not shown) which for in stancevcontains'oil under` a high pressure.v 4By admittance of oil underl a sufficiently high pressure into the chamber e 32, the required contact pressure between the gear disc 12 and the gear wheelsi13 and 14 may be obtained. :A branch pipe 34 extends from the pipe 33 intoan annular chamber 35 at the right hand end wall ofthe casing. An annular piston 36 is slidably mounted lin said chamber, and bjr-displacement of said gaged, the said clutch being thus actuated" by admittance of oil under pressure. into the chamber 35., The faces of the pistons 31 and 36. subjected to the o il pressure are dimen.

sioned in such a manner-in relation to each other, that the clutch 29 will slide before a sliding can occurbetweenthe gearfdisc 12 and the gear wheels 13, 14-,fin case the-load on the driven shaft should' beeome'toogreat; Hereby a damaging ofthe Contact surfaces of the deformation gears is prevented.` v

j In orderltomake'it possibletodisplacefthe deformation gear wheels `13 'and'14radial-ly inwardly or outwardly'in r'elationto thegear disc 12 without'the ynecessity of relievingthe fiuidpressure acting upon the piston V31,",the wheels 13 and'14 are not 'only'slidably mounted'on their vshafts 15 and '17, Vrespectively-,y but they are also mountedy so asJ within certain j limits to be permitted to take aninclined-p'osition to the shafts.i For'this'purp'ose, eachof J.

the wheels 13 or 14 is composed-ofthree rings, viz. an outer ring V13 and 14, respectively, which forms the wheel rimproper,V an intermediateV ring 37, and an inner ring 38 which 13 or 14 being connected `with the intermediate ring 37 by means of two diametrically opposite pivots 39,and the said intermediate ring being connected, with'the inner ring 38 by means of a similar pair of pivots 40 posi' tioned 'at right angles to Y the pivots 39. y Hence, 'it will be possible to adjust the outer wheelrings, or rims, 13 and 14, into a position Ainclininga little tothe axis'ofthe and 17, respectively. j j

In order that an` adjustment of 'this kind may be performed, each wheel '13,'fby means of a'link41,is 4connected with an adjustment ring 43 common tojall of the wheels 13 and members of a universal joint, the outer; ring t 90 xii-00 turna-bly mounted the housing 5,'o'ne end of-20105 said link 41 being hingedlyljconnectedwith a ring 43 rotatably connected with thewheel,

rim`13 so as notvto `take part in the rotation of the latter. In asimilar manner, each' of the wheels l4,`by V means cfa link 44, "is con--v nected with another 4'adj ustment ring 46 turnably mounted in the housing, and 'ea'chfof the links 44 atits one end is'hingedly' connected withfa ring 45` rotatably connected with 4^the rim 14 offthecorrespondingV wheel so as not to take part in thenrotation tothe wheels 13. By means of'links 47 and of the same, just as describedwith reference on a control shaft 51 mountedfexteriorly of the housing 5 in suitablejbearings thereon and provided with ahajnd'whefel 52er the like adapted for imparting a rotational move-V ment to the control shaft.` The arms 49"and"f 50 are positioned in such a" relation to'each other and to the` direction ofthe links 47 and.

52, respectively;v that the l adjustment rings 43 and 46a're turned; in opposited-irectio'ns when rotating thecontrolshaft 51,'an`dthere-*ll iso latter'is slidable onfits shaft'bythe inter-p85 j c arms, 5 7j and 58, respectively, on turnable rings `59 and 60, respectively, common to all.

by the.'said-adj1gstmentgrings win adjusfthe gear wheels 13 and 14 'into'. an opposite inclination in relationtotheirshafts and17, respectively.

If, for instance, the three deformationgear Wheelsljshown in Fig.Y 4 areswu'nga little in fthe directionfof the arrows 'a by means Yoffthe control. members just described, so

thatthey donotllonger take. a position at rightangles to the radii ofthe disc 12 atthe points off contact, the rotation 'of thedisc 12in the direction'indicated by the arrow` b will cause -the gear .Wheels 13 to'roll along a helicalpatlron thel disc, and to be displaced Vtowards .thecentreof the same, as long as the .turning'of theadj ustment ring 43, or" the control .shaft 51 maintained..v Simultane-V ...ously herewith the gear wheels 14 are swung in a similar manner by means of the adjustment ring 43,:but in opposite, direction, i. e. oppositeto the direction of the arrows a, and

thereby the'saidil Wheels ,14 `will be caused to roll along a helical path at the opposite side. f iof then-gear disc 1,2, so thatthe said wheels are displaced outwa rdly towards the circum` YVference 'of the latter..

'gOmga y f Adisplacement-of the lgear'Wheels 13 and .14 in the manner just described will Vresult in va Vdifference in speed between vthe two Asun 23 and 24, as hinted at in the foreyand thereby the drivenshaft 2' will The aforesaid differbe set into. rotation.v

fence in speed, and thereby'alsof' the speed of ,the driven shaft 2, will naturally be increased the longerthe turning of thev control' shaftV f 51 is maintained. When' the turning of the fcontrol shaft lhas ceased,- the gear Vwheels 13 and 14'- will .regain a position at right angles j toftheiri shafts, and then the driven shaft 2 21.40. Y y y ed bytheradial dlsplacement of the 'gear will continue in rotating at the speed adjustwheels 13 and 14. K

.54 for each-of them. .Atone end the said guide links., are connected with a 'ring55 .56 andk'rotatably connected vwith the wheel rims. l3and" 14respectively, so as not to take rpart in the rotation of the latter, and the.

f rings 55 and 56 are in a suitable manner-con- K. nected with rthe, rings42 andl45, respectively,-

5K5v tionV beingperform'ed; in two points which Yare spaced by 12W-'in relation to each other .7'.

at thefopposite side ofthe wheels, theconnec- -i and .to the point of connection ci' the adjustthis manner-.the three wheels in each set will ,ment links 41 andV 44. At thev other -end guide links 53 and 54 are connected with of vthegear wheels in each setthereof.` In

'bepositivelyoupledte @21.011 other thisemnew! struction. securing thatfall of them'rwillbei l given an equal inclinationfto" the yshafts 15 and 17 at the adjustment.l

It is to be noted that. the embodimentde.- d

scribed above andshowniirthe drawings for d the purpose kof explanation is to be considered as ay constructional-.example only, `and that theinvention is not limited to the same.

'l`l 1e` p'art is'of construction may be modified within wide vlimits" without departing yfrom theA principle of invention. I t is not neces'- sary thatV the two "setsofv gear wheels13y and V14 are radially `displaced,,or adjusted, at the same time,y butgthey 'may each be combined f with va separatefcontrol shaft, such Ashafts .being-independent. of each-other and adapted each tocoact with .onej'vof 'the' adjustmentv rings 43 .or 46 onlyl Finallyit is Vnot necessary to employ two deformationfgears 12,13

and 12, l14, respectively, and git isals'o posto connect the `driving v'shaft 1 with one of f the sun wheels ofthe diilerent-ialfgears.k

,Theinventio-n involves 'the possibility to A obtain, great amounts of torque'on `the 'driven shaft 2 due to the fact'th'at the torquesof vthetwo sun wheels 23 and `r 2 4 are always equal to each other; and i oppositely 4directed so that they will counterbalance the actions ofV each otheron thegear disc 12'when the '85' sible to employonefofthem only' and directly lshaft 2 is at a rest. Hereby the gear wheels 13 and 14 will talre'certain definite positions. Y Y At a displacement of one or both of the sets yo fgear wheels"13and14 lthe oppositely directed torques transmitted vfrom the two sun` wheels23 rand V24 will cause a difference of torque inthe gear'disc'12 corresponding to thel amount of torque which must be entered vby means Yof thev driving ,shaft 1. Y WhatfI claim and; desire to secure by Letlters Patent is f' 1. In a continually'variable change speed gear, a driving shaft, lat least one deforma'- `tion gear consisting of. hard but somewhat elastic gear'membe'rs having smooth surfaces in. contact wi' h eachotheran'd adapted for" yvariation of the gear ratiov by displacement of said gear members in relation to 'each other,

means for exerting a greatcontactpressure between said gear members, an rintermediate` shaft connected with the deformation l gear f and adapted to "be rotated by the same at a variable speed 'whenthedriving shaft is running at a constant spe-ed, a differential gear the 'sun wheels of which are connected with 'the ldrivir'ig shaft and with the intermediate" shaft, respectively, and adapted torotate in .opposite wheelsfoii the diiierentialgear aregi'n mesh at `'opposite sides with the ysaid sunl wheels, a planet wheel support means, and a driven shaft connected withsaidplanetwheel support.

directions, whereas the planet 2.111' acontinually variable speed gear, adriving shatt,two coacting deforma- 136 i' tion gears consisting of hard but somewhat elastic gear members having smooth surfaces in contact with, each otherand adapted 4for variation ofthe gear 4ratio by displacement,

' able speed `whenthe driving shaft is running at a constant speed,l va differential fgear the sun wheels of which areeach connected with rotate in opposite'directions,1whereas 4 the planet wheels of the; differentialgear are-in mesh atopposite sides withthe said sun wheels, a planet wheel support means, and a driven shaft connectedwith-said planet wheel support 3. In a vcontinually variable change speed gear according to claim 2, the additional feature that the deformation gears are in the shape of plane wheel gears having a common gear disc connected with the driving shaft and driven thereby, the gear wheels of the separate deformation gears beingpositioned in contact with said disc at opposite sides thereof. A

4. In a continually variable change speed gear, a driving shaft, two coacting deformation gears consisting of hard but somewhat elastic gear members having smooth surfaces in contact witheach other and adapted for variation of the gear ratio by displacement of said gear members in relation to eachother,

the deformation gears consisting of a1 common gear disc and two sets of gear wheels positioned in contact with said disc at opposite sides thereof` means Vfor exerting a great contactpressure between the members of the deformation gears, and means for connecting the common gear disc with the driving` shaft, an intermediate shaft connected with each of the sets of deformation gear Ywheels, and adapted to be driven thereby at a variable speed when the driving shaft is running at a constant speed, a differential gear the sun wheels ofwhich are each connected with deformation gear wheels in relation4 to the centre Yof the deformation gear disc, a number of planet wheels belonging tothe differential gear and positioned in mesh at opposite sides with the sunV wheels thereof, a planet wheel support means, and a driven shaft connected with said planet wheel support.

5. In a continually variable change speed ture'fof-mea'ns connecting the two sets of. deformation gear wheels and adapted for simultaneous kdisplacement ofthe-same in opposite directions inrrelationto the centre of the common deformation gear disc;v

3 '6; In at continually variablechange speed gear according to claim l4, the additional feagear according to claim 4, the additional feap ture that the set of Ideformation gear wheels at one side of the common l`deformation gear' disc isconnected with apiston member slidably mounted in a` casingsurrounding the gear members and adapted to be acted uponk by' `fluidy pressure l for exerting, the required *contact pressure, the .commonv deformation gear disc being slightly fdisplaceable 'in axial direction when actedupon by said pressure.

7: In a continuallyvariable change speed gear laccording to claim 4, thev additional feature of a slidable v clutch member. interposed between the planet 'wheel support and the drivenffshaft, such "slideable' `clutch lr being adapted" to vbe engpgedlby means of af'piston actuated by fluidpressure. ,j l 'p I 8. In? acontinually variable change speedgear according toclaim' 4, the additional '-,fea-

ture of means "for displacement of the f deformation gear wheels in radialdirection in relation to the common `defo rmatif'm` gear disc, and means for obtaining an inclination tu'rethat each' of ft'hedeformation gear wheels consists ofv three concentric annular members tiltably interconnected according to the principles of auniversal joint, the Voutermost annulus by means of a link mechanism being connected Vwith manually operablev'iadjust- 'i ment' means adapted for obtaining an in clination 'of the said outermost wheel ringin relation to the radii vof thejdeformation gear 10.l In a continually variable changefspeed gear, a driving shaft,a deformation gear disc connected with saiddriving shaft.. and

consisting of a hard butfsmewhat elastic material. ta set of deformation gear wheelsproduced from a material of the same nature asy the gear disc andI rotatably mounted in contact with one side of the sameon shaftspositioned radially. in relation to the/axis of rotation of saidV disc,` an intermediateshaft connected with said setof gear l'wheelsl and adapted to be rotated by the same, a second'set ofdeformation gear wheels producedfrom a similar Vmaterial as theV first mentioned 'oneV andV rotatably Amounted, inicontact .with the manner, 4a secondrintermediate `shaft 'connected with lsaid*` second set deformation gear-wheelsand adapted'to berotated by the same ina direction'lopposite to thel direction Y oppositesider of thegear disc inzafsimilarVK f Y aol off rotation. of `the first -inentioned .interme-f diate shaft, means for' v.radial displacement of2 the first set vof gear VWheels` in relation Y to the gear disc, means-for a simultaneousdis.- placement of the second set of vgearwheels 1n thesame ,manner butin opposite direction,

Y means forslidably mountingqofone vset `of.

gearlwvheels in axial direction inv relation to thegeardisd'means for .exerting a great pres-` 'sure' on .sa-id slidablyy mounted `set of'gear Wheels towards the gear dScmOuntedbetween the twosets of such wheels, a differenconnected with one of the intermediate shafts, p Whereas the planetwheel's of the differential Y gear are in' meshat'oppo'site sides with the,

f said -Ilsun' Wheels, a vplanet WheelV support means', and a, driven-shaft connected with theA saidA planet wheel support L byJthe inter-y mediaryof a slidableclutch.

ll; In acontinually' variable'change-speed Y' Y gear -1 according to vclaimv'lO', the additional i 1 features that the means fer'slifdable mounting Y ofoneffset .ofdeformationgearWheelsyis giventhesliape` of a Piston; member f slidably mounted-in acorresponding cylinder ,means andacted 'upon by fluid pressure in adirection towards thel deformation gear disc.; that i' v .the slidablelclutch is adapted to be engagedr f,

bymeans of another pistongmember `acted.

i occur between Vthe; sets of fdeformationgear Wheelsand the deformationgear disc eontacting-therewith. Y

r l 12. Inga continuallyyariable changefspeed i y, ,40 gear according to claim 10, the additional feature of means adapted forperfo'rmingan inrv'heelsfat thelsamevspeed infoppositee'drecf Y d tions when thetwo sets of deformationgear v wheelsgat the opposite sides of the deformar,

tion gear discare ata different the centre of saiddisc. n

v ,15. In a `continually Variable change speed V.distancefrom 70 gearfaccording vto claim 1Q, the additional n features ofemeans for Yperforming an inollnatonof one set of deformationgear Wheels 1nKV relation to the radiiv of the deformation gear disc at the radial displacement oftheformer, means for simultaneously performing'a simi ilar inclination of the second set of deformation gear YWheels in oppositefdirection', and V17r manually operable control means-adapted for simultaneous actuationof both of the inclina; tion performing meansto an equal extent.

l vIn testimony whereof I have signed Vmy name to this specification.` i

i clnation ofV one` set .off deformationv gear-fVK lWheels in relationto the radii of the gear disc at the radial displacementfof the former, and

' tion gear Wheels. infoppositedirection.

. v.13.. AIn a continuallyvariable change speed y. gear 'according to claimflO,` the additional features thaty eachV ofl the. deformation gear wheels consistsof a plurality yof concentricalgear disc Vand that the separate-annularmem- "means for simultaneously,performinga simi i y .lari inclination of the 4secondsetofldeformaf offro Gorriti-zml) WELLTON.

lypositioned annular members the outermost" i* one: of "which has aspherical. circumference adapted' for contact With-the 4deformation bers ofseach deformationgear Wheelaretilt- Y ably 'interconnected according Vto ther .princi-y ples ofv anniyersaljoint.

`gear according to claimj 10,` the additional feature thatl the.. sun Wheels of the differential zgear and the'dcorresponding 'intermediate shaftsare connectedwith the corresponding 'i Vset of,deformation"gearv Wheels; bythe Vinter- 1 mediary of gears-,adapted to rotate y the`V sun' Y Y K,

14.. In a,.`cont1nuallyvariable change speed Y. t 

